GB153437A - Improvements in or relating to gramophones and like machines or instruments - Google Patents
Improvements in or relating to gramophones and like machines or instrumentsInfo
- Publication number
- GB153437A GB153437A GB2407019A GB2407019A GB153437A GB 153437 A GB153437 A GB 153437A GB 2407019 A GB2407019 A GB 2407019A GB 2407019 A GB2407019 A GB 2407019A GB 153437 A GB153437 A GB 153437A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- sound
- horn
- thin metal
- central
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
153,437. Marles, A. T., and Hunter, H. W. Oct. 2, 1919. Sound magnifying and directing appliances.- A phonograph with mternal horn is provided with various resonating devices. The case of the machine is divided into compartments, of which the central one h, shaped as shown, forms the horn. The side compartments g, i, are resonance chambers, the chamber i being subdivided. Communication holes l are provided with vibrating tongues m and organ pipes may be placed in the chambers. The chamber g is fitted with tuned strings p and optionally with a sound board. The central chamber is provided with a sound board which may be in two parts r, r<1> supported by rubber plates u, u. The chamber y so formed communicates with the passage w through openings z in the bearer s. The part v bears a rubber-insulated glass plate 2. The part r<1> carries a secondary sound-box as described in Specification 153,363, the diaphragm 3 being connected bv a rod 4 to a thin metal or celluloid plate 5. A curved tapering thin metal plate 12 is resiliently suspended from the table c. The curbed block 11 may be made in solid, hollow, or skeleton form. Specification 153,437 also is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2407019A GB153437A (en) | 1919-10-02 | 1919-10-02 | Improvements in or relating to gramophones and like machines or instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2407019A GB153437A (en) | 1919-10-02 | 1919-10-02 | Improvements in or relating to gramophones and like machines or instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB153437A true GB153437A (en) | 1920-11-11 |
Family
ID=10205878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2407019A Expired GB153437A (en) | 1919-10-02 | 1919-10-02 | Improvements in or relating to gramophones and like machines or instruments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB153437A (en) |
-
1919
- 1919-10-02 GB GB2407019A patent/GB153437A/en not_active Expired
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